P. D. Ouspensky
. In Search of the Miraculous
.
The Psychology of Man's Possible Evolution
.
A New Model of the Universe
.
Tertium Organum: The Third Canon of Thought,
a Key to the Enigmas of the World

Osho
. Meditation, the First and Last Freedom
.
Hsin Hsin Ming: The Book of Nothing
. Beyong Enlightenment
. The Golden Future
. The Zen Manifesto